Alliance Laundry Systems BD3LLFGS401UW01 Troubleshooting Manual Download Page 18

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513447

Dryer Troubleshooting

6. Dryer Heating Assembly Does Not Heat or Burner Does Not Ignite

Dryer heating assembly does not
heat or burner does not ignite.

Is exhaust

system

improper or

inadequate?

Refer to

Installation
Instructions

(supplied with
unit) for
exhaust
requirements.

Is exhaust

duct made of

plastic or thin

foil?

Replace with
rigid or semi-
rigid metal
exhaust duct.

Yes

Is house fuse

blown or

circuit breaker

tripped?

Check fuses or
circuit breakers. A
240 Volt electric
heat dryer uses two
fuses. Make sure
both fuses are
good.

Yes

Electric

Models: Is

heater assembly

inoperative?

Test heater
assembly and
replace if cold
Ohms do not
read between
9 and 10.5
Ohms.

Yes

Electric

Models: Is

thermal fuse
inoperative?

Test thermal
fuse and
replace if
inoperative.
Refer to

Test

Procedures

section.

Yes

DRY1848Sa

Yes

Continued on

next page.

Is limit

thermostat

inoperative?

Test thermostat
and replace if
inoperative.
Refer to

Test

Procedures

section.

Is drive

motor switch

inoperative?

Test switch
and replace if
inoperative.

Is termperature

selector switch

set at FLUFF/NO

HEAT or

inoperative?

Reset or test

switch and

replace if

inoperative.

Yes

Summary of Contents for BD3LLFGS401UW01

Page 1: ...www comlaundry com DRY716C Part No 513447 April 2010 Troubleshooting Single and Stacked Dryers Refer to Page 6 for Model Numbers ...

Page 2: ......

Page 3: ...ot Ignite 16 7 Igniter Does Not Glow Gas Supply Sufficient Gas Dryer Models 18 8 Burner Ignites and Goes Out Repeatedly Gas Dryer Models 19 9 Igniter Glows But Burner Does Not Ignite Gas Dryer Models 20 10 Dryer Heater Assembly Or Burner Shuts Off Prematurely 21 11 Dryer Heater Assembly or Burner Repeatedly Cycles Off On Limit Thermostat 22 12 Dryer Heater Assembly or Burner Does Not Shut Off 24 1...

Page 4: ...m Operation Gas Models 63 36 Electrical Circuit To Ignition System Gas Models 65 37 Gas Valve Coils Check Gas Models 65 38 Sensor Check Gas Models 66 39 Igniter Check Gas Models 66 40 Ignition Control Grounding Check Silicon Nitride Ignition 66 41 Thermal Fuse Electric Models 66 42 Heater Assembly Electric Models 67 43 Cycling or Limit Thermostat 67 44 Door Switch 67 45 Thermistor 68 Section 8 Int...

Page 5: ...nstructions IMPORTANT The word IMPORTANT is used to inform the reader of specific procedures where minor machine damage will occur if the procedure is not followed NOTE The word NOTE is used to communicate installation operation maintenance or servicing information that is important but not hazard related In the interest of safety some general precautions relating to the operation of this machine ...

Page 6: ...lso recommends contacting an authorized technician and using authorized factory parts To reduce the risk of electric shock fire explosion serious injury or death Disconnect electric power to the dryer s before servicing Close gas shut off valve to gas dryer s before servicing Never start the dryer s with any guards panels removed Whenever ground wires are removed during servicing these ground wire...

Page 7: ... Alliance Laundry Systems at 920 748 3950 for the name and address of the nearest authorized parts distributor For technical assistance call 920 748 3121 Nameplate Location When calling or writing about your dryer be sure to mention model and serial numbers Model and serial numbers are located on the nameplate The nameplate is in one of the four corners of the door well The door well is the shaded...

Page 8: ...1 X X BDGLXFSS301EN01 X X HDELEFGS151CW01 X X HDELEFGS151CWNA X X HDELEFGS171CQ01 X X HDELEFGS171CW01 X X HDELERGS151CW01 X X HDELERGS151CWNA X X HDELERGS171CW01 X X HDELXFGS151CW01 X X HDELXFGS171CW01 X X HDELXRGS151CW01 X X HDELXRGS171CW01 X X HDELYFGS151CW01 X X HDELYFGS171CW01 X X HDELYRGS151CW01 X X HDELYRGS151CWNA X X HDELYRGS171CW01 X X HDGLEFGS111CW01 X X HDGLERGS111CW01 X X HDGLERGS111CWN...

Page 9: ...RGS171TWNA X X SDELXRGS171TW01 X X SDELXRGS171TW02 X X SDELYFGS171TW01 X X SDELYFSW171TN01 X X SDELYRGS151TW01 X X SDELYRGS171TW01 X X SDGLCFGS111TW01 X X SDGLCFSW111TN01 X X SDGLCRGS111TW01 X X SDGLCRGS111TW02 X X SDGLCRGS111TWNA X X SDGLXRGS111TW01 X X SDGLXRGS111TW02 X X SDGLYFGS111TW01 X X SDGLYFGS111TWNA X X SDGLYFSW111TN01 X X SDGLYRGS111TW01 X X SDGLYRGS111TWNA X X SSELCFGS151TW01 X X SSELC...

Page 10: ... X X SSELYFGW171TWNA X X SSGLCFGS111TW01 X X SSGLCFGS111TWNA X X SSGLCFGW111TW01 X X SSGLCFGW111TWNA X X SSGLXFGW111TW01 X X SSGLYFGS111TW01 X X SSGLYFGS111TWNA X X SSGLYFGW111TW01 X X SSGLYFGW111TWNA X X Model Number Coin Drop Ready Coin Drop Installed Card Reader Ready Central Pay Electric Heat Gas Heat Add Letter To Designate Color L Almond W White Q Bisque ...

Page 11: ...ature air in through louvers at the rear of the dryer and over the heat source burner flame for gas and heating element for electric The heated air moves through the heater duct and into the cylinder where it circulates through the wet load The air then passes through the lint filter air duct and exhaust fan where it is vented to the outdoors DRY1819S Cylinder Exhaust Fan Gas Valve Air Duct Lint F...

Page 12: ...n electrical fuse Yes Turn power on or replace fuse Check both fuses for electric models Yes Is loading door closed Close door No Is door switch inoperative Yes Test switch and replace if inoperative DRY1845Sa Yes No No Yes Refer to Adjustments section to check start switch and start windings Check for foreign objects jammed in blower fan Are motor starting functions inoperative does motor not sta...

Page 13: ... shaft will spin Replace motor if shaft is locked up Is there a bind in motor bearing Is motor wire harness connection block loose Firmly press connection block onto motor switch Is wiring broken loose or incorrect Yes Refer to wiring diagram Is power cord miswired Refer to wiring diagram for correct wiring Continued from previous page No Yes No No Yes DRY1845Sb Yes ...

Page 14: ... washer load is a normal dryer load Maximum load dryer cylinder one half full of wet clothes Yes Is clothes cylinder binding Check cylinder for binding and out of round condition Check front and rear bulkheads for warping Check support rollers for binding Check cylinder seals and glides for wear or damage Check for clothes lodged between cylinder baffle and bulkhead No Yes Is there broken loose or...

Page 15: ...ing of unit Is idler lever spring broken weak or disconnected Replace or reconnect spring Yes Is there oil on cylinder Wipe oil from cylinder Yes Is belt inside out Reinstall belt with ribbed surface against cylinder Yes Is idler arm binding Add grease between idler arm and motor mount Replace idler arm and bolt if needed Yes No Is dryer overloaded Remove some laundry from dryer Yes No DRY1846S Ye...

Page 16: ...incorrect Refer to wiring diagram Yes Is motor centrifugal switch sticky or plugged with lint No Remove dust or lint and spray with a cleaner and lubricant Yes Is door switch inoperative Test switch and replace if inoperative Refer toTest Procedures section No Yes DRY1847S Is accumulator inoperative Test timer and replace if inoperative Refer toTest Procedures section No Yes ...

Page 17: ...aundry Systems LLC DO NOT COPY or TRANSMIT Dryer Troubleshooting 5 Dryer Runs Only When Door is Open Dryer runs when door is open Is door switch miswired Rewire door switch Refer to wiring diagram Yes DRY1856S Replace door switch No ...

Page 18: ...t breakers A 240 Volt electric heat dryer uses two fuses Make sure both fuses are good Yes Electric Models Is heater assembly inoperative Test heater assembly and replace if cold Ohms do not read between 9 and 10 5 Ohms Yes Electric Models Is thermal fuse inoperative Test thermal fuse and replace if inoperative Refer to Test Procedures section Yes DRY1848Sa Yes No Continued on next page No Is limi...

Page 19: ...dures section Continued from previous page Yes No Yes No No Gas Models Is gas flow restricted in gas orifice Clean out gas orifice Yes Yes Is cycling thermostat inoperative Test thermostat and replace if inoperative Refer to Test Procedures section Yes No Is wiring broken loose or incorrect Refer to wiring diagram Yes Gas Models Is gas supply insufficient Check gas shut off valve in dryer and main...

Page 20: ...Sufficient Gas Dryer Models Gas dryer models Igniter does not glow gas supply sufficient Is there power to power leads on valve pink and blue wires Check selector switch thermostats motor switch and wiring No Has flame sensor failed with contacts open Yes Replace sensor Yes Is igniter broken or open Replace igniter No Yes DRY1850S ...

Page 21: ...ments Yes Is weather hood flapper restricted No Is burner heat holding sensor contacts open Replace sensor or correct gas supply problem No No DRY1851S Refer to Installation Instructions supplied with unit for exhaust requirements Yes Is gas supply insufficient Check gas supply and pressure Make sure gas shut off valve is turned on Is igniter cracked Replace igniter and bracket Are gas valve coils...

Page 22: ... open No Is gas supply insufficient Check gas supply and pressure Make sure gas shut off valve is turned on No Yes DRY1852S Replace gas valve in warranty or replace coils out of warranty Refer to Test Procedures section Yes Are igniter and bracket improperly installed on burner tube assembly Loosen screw and properly position igniter and bracket on burner tube assembly Is sensor improperly install...

Page 23: ...as Models Is dryer properly equipped for type of gas used Refer to Gas Burner Conversion Procedures supplied in gas burner conversion kit Gas Models Is burner flame improperly adjusted Adjust flame Refer to Adjustments section Cycling off on limit thermostat Momentarily connect a jumper wire across thermostat terminals If heater element heats or burner ignites when jumper wire is connected refer t...

Page 24: ...system requirements Is exhaust duct made of plastic or thin foil No Replace with rigid or semi rigid metal exhaust duct Yes Is lint filter clogged Clean lint filter Yes Is there lint in internal dryer ductwork No Disassemble dryer ductwork and clean Is there lint or other obstruction in external exhaust system Disassemble and clean exhaust system Yes Is hinged damper on exhaust system weather hood...

Page 25: ...nel seal Check and replace seal if necessary Check and replace seal s if necessary Is there an air leak at cylinder seal s Is there an air leak at blower seal Check and replace seal if necessary Test thermistor and replace if inoperative Refer to Test Procedures section Is thermistor inoperative Is there an air leak around loading door Door not sealing due to damaged seal or inoperative door catch...

Page 26: ...er heater assembly or burner does not shut off Is motor switch inoperative Must be in a heat setting Test switch and replace if inoperative Yes Motor does not stop No Refer toDryer Motor Does Not Stop paragraph Yes Is wiring incorrect Refer to wiring diagram No Yes SWD1700S Has heater assembly shorted Remove heater assembly and check for short No Yes ...

Page 27: ...load Is there excessive lint on lint filter Clean lint filter Is exhaust system improper or inadequate Refer to Installation Instructions supplied with unit for exhaust requirements No Yes Yes Yes Does heater assembly or burner shut off prematurely Refer to Dryer Heater Assembly or Burner Shuts Off Prematurely paragraph Yes Gas Models Is gas line pressure too high or too low If Natural Gas line pr...

Page 28: ...ol down to the OFF position Yes Is cycling thermostat inoperative Test cycling thermostat and replace if inoperative No Yes DRY1855S Are seals inoperative air leaks Check and replace any inoperative seals in the following areas 1 Seal between loading door and front panel 2 Seal between front panel and front bulkhead 3 Seal between blower cover and air duct 4 Seal between cylinder and front or rear...

Page 29: ...spring inoperative Remove lower access panel Set dryer to normal cycle and allow it to heat to operating temperature If the belt vibrates as it rotates around the cylinder the idler arm is making the noise Replace the idler spring Yes DRY1858S Check blower fan for missing or cracked fan blades Are idler pulley and shaft worn Are rollers worn Replace idler pulley and shaft Replace rollers No Yes No...

Page 30: ...r Whistling Noise in Dryer Excessive humming or whistling noise in dryer Is blower housing inoperative If the abnormal operating noise is loudest at the vent exit the problem is originating from the blower housing Replace the current housing and cover Yes SWD1704S Check blower fan for missing or cracked fan blades No ...

Page 31: ...rd Alrm Break in Alarm Error Service the door or coin vault switches OFF Break in Alarm Shutdown Error Service the door or coin vault switches E OP Open Temperature Sensor Error Open temperature sensor circuit wiring Replace sensor E SH Shorted Temperature Sensor Error Short in temperature sensor circuit wiring Replace sensor Err Coin Error Invalid coin pulse or inoperative coin sensor Check coin ...

Page 32: ... seated in its receptacle Is the 3 pin connector between the coin drop and the control connected correctly Are wires exiting coin drop optical sensor cracked or broken Start coin drop diagnostic test Replace coin drop If problem still exists replace the control Exit diagnostic testing and reset control Reconnect and run diagnostic test again Replace electronic control Coins Ignored When Entered Dw...

Page 33: ...l for correct use of IR No DRY1859S Check PDA Set up comport baud rate and consumer IR bit Does the control display EIOF or C If PDA displays control mismatch select proper control type Communication sequence checks out Yes Yes No Does the control respond Make sure that SDIO IrDA card is installed if required on PDA No Yes C EIOF Has IR communication been turned off Turn IR communication on Refer ...

Page 34: ...ransformer Are there 24 volts AC across terminals H1 3 and H1 1 on the control Correct wiring to the primary of the transformer Make sure the machine is plugged in and power is on Are there 24 Volts AC across the secondary of the transformer Are there 120 or 240 volts AC to the primary of the transformer 1 2 3 NO YES YES YES NO NO NOTE Refer to wiring diagram for primary voltage No Display Dwg 1 D...

Page 35: ...513447 33 Electronic Control Troubleshooting Copyright Alliance Laundry Systems LLC DO NOT COPY or TRANSMIT No Display DRY1863S 1 2 3 ...

Page 36: ...ring to door switch Check operation of the door switch Replace if necessary Is there voltage across terminals H3 1 and H3 6 Is there voltage on the N O terminal of the door switch to a neutral wire Is there voltage on the COM terminal of the door switch to a neutral wire 2 3 4 YES NO Replace resistor Does resistor or jumper at proper ohms 1 NO YES NOTE Conduct all tests with the door closed YES NO...

Page 37: ...513447 35 Electronic Control Troubleshooting Copyright Alliance Laundry Systems LLC DO NOT COPY or TRANSMIT Door Open DRY1863S 1 2 3 4 ...

Page 38: ...age across H3 4 and H3 6 on the control Is there voltage across H3 1 and H3 6 on the control Replace the motor Correct the wiring to the motor Replace the electronic control Refer to door open troubleshooting NOTE Checks to be made only if motor does not start and door is not diplayed on control If door is displayed please refer to door open troubleshooting YES 1 2 3 NO YES NO YES NO DRY1861S 1 2 ...

Page 39: ...513447 37 Electronic Control Troubleshooting Copyright Alliance Laundry Systems LLC DO NOT COPY or TRANSMIT Motor Will Not Start DRY1863S 1 2 3 ...

Page 40: ...on FS 1 on the control to L2 Is there voltage on FS 2 on the control board to L2 Check for proper operation of centrifugal switch on motor Does it operate properly Replace heating element Check and replace wiring between components Replace element Check for proper air flow and operation of limit thermostat Replace thermo fuse Correct wiring between control and thermo fuse on the element Replace mo...

Page 41: ...513447 39 Electronic Control Troubleshooting Copyright Alliance Laundry Systems LLC DO NOT COPY or TRANSMIT No Heat Electric FLW1864S 1 2 3 4 5 6 7 8 ...

Page 42: ...3 neutral on the control Correct wiring between FS 1 and limit thermostat Is there voltage across FS 2 and H2 3 neutral on the control Make sure unit is calling for heat Check operation of thermistor Replace control Is there voltage across terminal 1 of the motor and L1 Check for proper operation of centrifugal on the motor Replace motor if necessary Correct wiring to the motor NOTE When calling f...

Page 43: ...513447 41 Electronic Control Troubleshooting Copyright Alliance Laundry Systems LLC DO NOT COPY or TRANSMIT No Heat Gas DRY1863S 1 6 2 3 5 4 ...

Page 44: ...n working properly IMPORTANT Never use oil to correct coin drop problems Oil residue will prevent coins from rolling properly IMPORTANT Do not bend or damage mechanical parts within coin drop To reduce the risk of electric shock fire explosion serious injury or death Disconnect electric power to the dryer s before servicing Close gas shut off valve to gas dryer s before servicing Never start the d...

Page 45: ...T 25 Troubleshooting Coin Drop continued Is machine level Machines that aren t level may prevent coins from following through required check stages of drop No Yes No Refer to wiring diagram for proper connections Yes No Yes SWD1714S Is proper electrical power supplied to coin drop Incorrect electrical connection may prevent coins from registering in coin drop Is coin drop clean Residue or lint bui...

Page 46: ... electronic coin drops with an old style tension spring shown in Figure 2 and Figure 4 test and replace tension spring using the following instructions Remove Coin Drop From Machine 1 Disconnect electrical power to machine and drop 2 Remove coin drop from machine Test Tension Spring 1 Push coin return button to open and close coin drop cover to clear possible coin jams Refer to Figure 2 2 Manually...

Page 47: ...head screwdriver under right side of tension spring and lift up Refer to Figure 5 4 Use screwdriver to move spring approximately 3 mm to left 5 Lift spring over left tab Refer to Figure 5 6 Rotate spring clockwise 40 to 60 degrees until it is free from right tabs Refer to Figure 6 7 Use screwdriver to remove spring from center tab Refer to Figure 6 8 Lift spring with attached clip off drop 9 Remov...

Page 48: ...Alliance Laundry Systems LLC DO NOT COPY or TRANSMIT 12 Use a small flathead screwdriver to push spring under center tab Refer to Figure 9 13 Lift spring gently to place in position under left tab 14 Push spring to right until it snaps into position Refer to Figure 5 15 Close coin drop cover 16 Move tension spring over cover catch Refer to Figure 4 Reinstall Coin Drop Into Machine 1 Reinstall coin...

Page 49: ...of the dryer is evenly distributed The dryer MUST NOT rock IMPORTANT DO NOT move the dryer at any time unless the dryer is completely assembled DO NOT slide the dryer across the floor once the leveling legs have been extended as the legs and base could become damaged To reduce the risk of electric shock fire explosion serious injury or death Disconnect electric power to the dryer s before servicin...

Page 50: ... bottom edge of front panel c Set timer to 60 minutes d Close the loading door Start the dryer in a heat setting refer to Operating Instructions supplied with the dryer The dryer will start the igniter will glow red and the main burner will ignite e Allow the dryer to operate for approximately five minutes then loosen the air shutter lockscrew Refer to Figure 11 f Turn the air shutter to the left ...

Page 51: ...ition System Silicon Nitride Ignition System Figure 11 Air Shutter Lockscrew Air Shutter Shut Off Valve Handle 1 8 Inch Pipe Plug For checking manifold pressure D265SE3A WR Air Shutter Lockscrew Air Shutter Shut Off Valve Handle Shown in Open Position 1 8 Pipe Plug For checking manifold pressure D363SE3A ...

Page 52: ...though coin entry and along the side of the coin drop Refer to Figure 12 d Insert a coin through the coin drop If coin does not roll through drop continue with the following e Remove cotter pin from top of drop Refer to Figure 12 Save pin for reinstallation when cleaning is complete f Move metal clip closer to sensor so that it comes off frame Refer to Figure 12 g Remove coin return from coin drop...

Page 53: ...o Figure 15 j Check coin drop sensor for dust or dirt on eyes Wipe eyes with dry cotton swab Refer to Figure 16 IMPORTANT DO NOT use isopropyl alcohol to clean electronic sensor or eyes k Reinstall coin return on to coin drop frame l Reinstall metal clip and slide towards coin insert slot All cotter pin holes must line up m Reinstall cotter pin n Place drop on level surface to verify that coins fo...

Page 54: ...lectronic Coin Drop NOTE The electronic coin drop should be cleaned once a year Clean the drop more often if it is exposed to high levels of residue or lint build up a Disconnect electrical power to machine and drop b Remove coin drop from machine c Check the spring style of coin drop Coin Drops with Old Style Spring refer to Figure 17 1 Move spring downward until cover catch is free Refer to Figu...

Page 55: ...uring servicing these ground wires must be reconnected to ensure that the dryer is properly grounded W001R1 WARNING NOTE Do not overbend the spring by opening cover too far d Clean the coin path with a soft brush and wipe exposed surfaces with an alcohol moistened cloth Refer to Figure 21 or Figure 22 e Clean residue from coin rail with an alcohol moistened cloth Refer to Figure 23 DRY2408N Figure...

Page 56: ...es are removed during servicing these ground wires must be reconnected to ensure that the dryer is properly grounded W001R1 WARNING f Clean light sensors with a soft brush or air spray duster Refer to Figure 24 g Close cover for coin drop h Coin Drops with OLD Style Spring Move spring back over cover catch i Reinstall coin drop into machine j Reconnect electrical power to machine and drop k Add a ...

Page 57: ...losed 3 Timer motor test T and M 1702 and1709 suffix models or T and N all other models approximately 2460 3100 Ohms or apply live power to timer motor terminals and motor should run NOTE Timer Motor Resistance 120 Volt 60 Hz2 460 3 100 Ohms 240 Volt10 900 13 000 Ohms 24 Volt80 130 Ohms 4 Rotate timer to cooldown 5 minutes before OFF Infinite open reading should be found between L2 and H 5 Rotate ...

Page 58: ... servicing these ground wires must be reconnected to ensure that the dryer is properly grounded W001R1 WARNING 31 Fabric Selector Switch NOTE Refer to proper model wiring diagram when rewiring switch a Set test meter to read Ohms and apply meter probes to switch terminals NOTE Refer to proper model wiring diagram when reconnecting wires FABRIC SELECTOR SWITCH 4 Position L1 1 L1 2 Fluff No Heat Del...

Page 59: ...ires are removed during servicing these ground wires must be reconnected to ensure that the dryer is properly grounded W001R1 WARNING 32 Drive Motor Refer to Figure 26 a Remove motor and exhaust assembly b Disconnect motor wire harness at motor disconnect block NOTE Refer to wiring schematic Section 11 for internal motor switch wires NOTE Drive Motor Resistance 120 Volt2 460 3 100 Ohms 240 Volt10 ...

Page 60: ...connection block before starting this test B Manually depress actuator Continuity broken between switch terminal 5 and black wire C Continuity broken between switch terminal 6 and yellow wire D Manually depress actuator Continuity exists between switch terminal 6 and yellow wire E Continuity broken between switch terminal 1 and switch terminal 2 F Manually depress actuator Continuity exists betwee...

Page 61: ...e that the dryer is properly grounded W001R1 WARNING d Motor Windings Refer to SECTION 8 for Internal Wiring of the Dryer Motor Switch G 1 2 Ohms between black wire and orange wire Start Winding H 1 2 Ohms between yellow wire and orange wire I Continuity exists between orange wire and brown wire All motor windings check O K Run Main Winding Protector NO YES NO NO YES YES Inoperative start winding ...

Page 62: ...dels NOTE Refer to wiring diagram when rewiring switches a Set meter to read Ohms and apply leads on terminals of each switch You should read the following Switch A zero Ohms closed Switch B zero Ohms closed Switch C if present infinite open b Manually advance timing cam until it engages with ratchet wheel and the first click is heard Switch B should now read infinite open c Continue to rotate tim...

Page 63: ... fan assembly b Remove the two motor switch attaching screws Refer to Figure 32 Disconnect switch leads Remove motor switch c Remove thermal overload protector NOTE The thermal overload protector is unique to the motor from which it was removed and should only be used on that motor To reduce the risk of overheating the motor do not use any thermal overload protector other than the one taken from t...

Page 64: ...witch and plastic clip Lift up on handle of screwdriver until both clip and thermal overload protector detach from motor switch Refer to Figure 29 d Attach the thermal overload protector removed in Step c to the new motor switch e Install new motor switch onto motor and reconnect motor switch leads removed in Step b Refer to Figure 32 f Test motor switch by following the step by step procedures in...

Page 65: ... around the secondary coil and through the igniter causing the igniter to get hot c Burner Circuit In approximately 30 seconds the igniter attains ignition temperature and ignition is made The heat from the burner flame causes the sensor contacts located on burner housing beside the igniter to open A circuit is then completed through the secondary valve coil opening the valve and allowing gas to f...

Page 66: ...oil Main Coil GAS VALVE FOR SILICON NITRATE IGNITION D340SE3A 1 2 1 3 4 5 Secondary Coil Holding And Booster Coil GAS VALVE FOR SILICON CARBIDE IGNITION 4 5 1 3 2 D270SE3A Redundant Coil Main Coil WIRING SCHEMATIC Igniter IGNITION CONTROL Ground Flame Sensor 220 240 Volt 50 Hertz Electrical Supply Line D332SE3A ...

Page 67: ... the coil Figure 30 Meter should register line voltage in all temperature settings except FLUFF NO HEAT which should read zero VAC g If meter does not read line voltage in step f check motor switch thermostats fabric switch accumulator or timer 37 Gas Valve Coils Check Gas Models a While supporting the access panel remove two screws from bottom edge of access panel b Gently lower the access panel ...

Page 68: ...s f Silicon Carbide Igniter Meter should read between 45 200 Ohms Silicon Nitride Igniter Meter should read between 49 88 Ohms NOTE If meter does not read appropriate Ohms then replace the igniter IMPORTANT Always examine all wires terminals and connectors to be sure wiring is correct before replacing any components 40 Ignition Control Grounding Check Silicon Nitride Ignition a While supporting th...

Page 69: ...hms 2 Apply meter probes to the thermostat terminals 3 Meter should read zero e Cycling Thermostat S P D T 3 Terminals 1 Set meter to read Ohms 2 Apply meter probes to terminals 1 and 3 Meter should read zero 3 Remove screws holding thermostat to blower fan cover 4 Heat thermostat with a small flame until a distinct click is heard then immediately apply meter probes to terminals 1 and 2 Meter shou...

Page 70: ...e removed during servicing these ground wires must be reconnected to ensure that the dryer is properly grounded W001R1 WARNING 45 Thermistor a While supporting the access panel remove two screws from bottom edge of access panel b Gently lower the access panel to disengage panel locators from bottom edge of front panel c Label and disconnect wires from thermistor NOTE Refer to wiring diagram when r...

Page 71: ...e to gas dryer s before servicing Never start the dryer s with any guards panels removed Whenever ground wires are removed during servicing these ground wires must be reconnected to ensure that the dryer is properly grounded W001R1 WARNING Figure 32 R R S 2 6 4 3 5 1 MAIN START ORANGE COPPER CUSTOMER CIRCUIT OVERLOAD PROTECTOR BLUE BROWN BLACK COPPER YELLOW COPPER PUSH TO START LINE SWITCH SHOWN I...

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